Nose board for axminster looms



Oct. 24, 1950 w. A. BLANCHARD 2,527,054

NOSE BOARD FOR AXMINSTER LOOMS Filed Oct. 7, 1948 INVENTOR WILLIAMABLANCHARD.

6m. FM

ATTORNEY.

Patented Oct. 24, 1950 NOSE BOARD FOR AXMINSTER LOOMS William A.Blanchard, Millbury, 'Mass assignor to Crompton & Knowles Loom Works,Worcester, Mass, a corporation of Massachusetts Application October '7,1948, Serial No. 53,347

11 Claims.

This invention relates to improvements in nose boards for Axminsterlooms and it is the general object of the invention to provide a noseboard having laminations which are bonded together, as by copper orsilver brazing, and are so related as to provide slots to receive thedents of the loom reed and also provide tuft yarn guiding teeth ornoses.

A form of Axminster loom which has gone into general use employs a noseboard having a plurality of rearwardly extending hook shaped teethspaced from each other to define slots which receive reed dents andisepara'tor plates forming part of a yarn controlling mechanism of theloom. In the past these nose boards have consisted of aligned units eachmade of a single piece of metal and their manufacture has been veryexpensive because of breakage of the thin saws which cut the slots andthe timerequired for the slot cutting operation.

It is an important object of the present invention to reduce the cost ofthe nose board unit and the time required for its manufacture by bondingtogether a series of flat metallic hook or nose plates alternating withfiat metallic spacer plates. The latter are shorter than the nose platesto provide the slots required for the reed dents.

It is another objectof the invention to provide an improved method ofmaking the nose board wherein fiat nose and spacer plates are arrangedparallel to each. other and alternately on one or more rods or boltswhich extend transversely through the plates. These rods extend beyondthe group of plates and carry nuts which permit forcing of theassembled. plates against each other in the relative positions they willultimately occupy in the loom. .When thus assembled the nose and spacerplates arebonded to each other and to the rods by a brazing. operationin a furnace. nuts-thereon are then removed sothe nose board will havesmooth flat end surfaces, thus permitting several boards to be arrangedclose to each other end to end on the loom.-

will appear as the description proceeds, the invention resides in thecombination and arrangement of parts hereinafter described and setforth.

In the accompanying drawings, wherein a convenient embodiment of theinvention is set forth,

Fig. 1 is a side elevation of part of an Axminster loom having theinvention applied thereto,

The extending ends of the rods and the v With these and other objects inview which warp sheds.

certain parts of the loom being shown in section, V Fig. 2 is anenlarged plan view looking in the direction of arrow 2 showing one ofthenose board units, parts of the latter being broken away, 7 Figs. 3and 4 are enlarged vertical transverse sections on lines 33 and 4 4,respectively, Fig. 2, I

Fig. 5 is an enlarged vertical section on line 5-5, Fi 2, H Fig. 6 is adiagrammatic view showing the relation of one nose plate and one spacerplate relatively to one of the connector rods and the tuft yarn guidingplates of the loom, 1

Fig. '7 and 8 are perspective views, respectively, of the nose andspacer plates or members, and

Fig. 9 is a plan view of the nose board unit as it appears after thebonding operation.

Referring particularly to Fig. 1, the m frame 10 has a breast beam Hover which thefabric F passes towarda take-up mechanism not shown. Thewarp threads W pass through harness frames 12 and through a reed Rhaving reed dents l3 and carried by the lay Hi. Mounted in front ofthelay is a set of tuft yarn guide plates l5 movable about an axis it bya cam controlled rod I'I. These guide plates are normally in a forwardposition to the left of that shown in Fig. 1, but are projectedrearwardly so that they can align with the reed dents :3 of the reedduring a tuft forming operation.

rived from a tube frame it which is controlled in usual manner to dipthe yarns through the A needle 59 lays a shot of weft behind the yarnsYand the reed then beats this shot and the tuft yarns forwardly over therear part of a nose board designated generally at N. In practice, thenose board is made of a number of aligned nose board units extendingacross the loom and held in place as described hereinafter.

The matter thus far described, except for the details of the nose boardN, are usual as to their construction and operation and may be as setforth in prior Patent No. 1,958,129 issued to Dacey and Robertson.

number of fiat plates assembled side by side and then preferably bondedtogether in a cooper or silver brazing operation.

In carrying the invention into effect there are provided a number ofnose plates 25 and spacer or separator plates 26. Referring particularlyto Fig. '7, each nose plate is made of flat sheet metal, such as steel,and has a straight top edge 30 along which the fabric F travels when thenose board is placed in the loom. At the rear of the nose plate 25 thereis formed an upstanding hook 3| the rear part of which leads to a curvedsurface 32 along which a tuft yarn will be drawn during the tuft formingoperation. Curved surface 32 is on a nose 33 shaped substantially asshown in Fig. 7, and the rear under edge 34 of the plate 25 is inclineddownwardly and forwardly to a vertical shoulder 35 located at the rightof a straight under edge 35 which may be parallel to the top edge 30.From a second shoulder 31 at the left end of the bottom edge 36 aninclined edge 38 leads upwardly and forwardly. As shown in Fig. 7 thenose plate 25 has relatively wide front and back parts 39 and 46,respectively. The forward wide part 39 has a perforation 4| thereinwhile the rear wide part 40 is provided with a similar perforation 42. Arelatively narrow part or section 43 of plate 25 is located between thewide parts 39 and 46 over a downwardly opening notch 44 between theshoulders 35 and 31. All of the nose plates 25 required for a unit willbe alike and substantially as shown in Fig. '7.

Each flat spacer or separator plate 26, see Fig. 8, has a top edge 45similar to top edges 36 of the nose plates. The spacer plate has abottom edge 46 corresponding to the bottom edge 36 of the nose board.The spacer plate 26 is provided with a rear widened part 41 the bottomof which is inclined forwardly and downwardly as at 48. The front orleft end of the spacer plate as viewed in Fig. 8 is provided with asecond widened part 49 having a forwardly and upwardly inclined bottomedge 50. The front wide part 49 is provided with a perforation while therear widened part 41 is provided with a second perforation 52. Anintermediate section 53 and notch 54 of the spacer plate are similar tosection 43 and notch 44 of the nose plate.

The distance between the perforations 4| and 42 of a nose plate 25 isthe same as the distance between the perforations 5| and 52 of a spacerplate, and these perforations are both at the same distance below thetop edges of their corresponding plates, so that when the frontperforations 4| and 5| are aligned and the rear perforations 42 and 52are aligned the top edges 30 and 45, and the bottom edges 36 and 46, andalso the bottom edges 38 and 50 will align. The under edge 48 of eachspacer plate, however, will preferably be parallel to but at a higherlevel than the corresponding inclined under edges 34 of the adjacentnose plates, and the rear end 55 of each spacer plate will be locatedconsiderably forward of the hooks 3| and noses 33. This latterrelationship is shown in Fig. 6. The reason for having the inclinedbottom edge 48 at a higher level than that of the edge 34 is to providea slot 56 for a guide plate I5.

In order to facilitate movement of the guide plates l5 the under forwardcurved edge 51 of the nose 33 ma be beveled or chamfered as at 58. Thischamfering will be located on a part of the nose plate 25 which is notoverlapped by the spacer plate 26 when the latter is aligned with thenose plate as already described. The chamfered edge 58 may be formedeither at the same time the nose plate 25 is punched out, or formed in asubsequent operation.

After the requisite number of nose and spacer plates for a unit U havebeen provided they will be assembled in alternation in side by sideorder with their corresponding front and back perforations aligned. Anelongated preferably steel member 60, which may be formed as a rod, ispassed through aligned holes 4| and 5| and have its screw threaded ends6| project beyond the sides of the group of nose and spacer plates. Asimilar rod 62 is then passed through the aligned perforations 42 and52. Each of the rods 60 and 62 will have nuts or the like 63 threadedonto the projecting ends thereof, and the nuts will then be tightened sothat the plates 25 and 25 will be forced into close contact with eachother.

When thus assembled the parts of the unit are bonded together in afurnace by a brazing metal, such as copper or silver, or similar metal.The brazing metal is placed over the top of the assembled plates and asit melts it passes down between the plates and around the rods, forminga metallic bond designated at 65 in Figs. 3 and 4. The bonding metal notonly unites adjacent surfaces of the plates to each other, but alsoestablishes firm holding connection between the rods 66 and 62 and theplates through which they pass. In order that the bonding between therods and the plates may be strong the rods should have a close fit withthe perforations in the plates.

During the brazing operation the nuts 63 are likely to be bonded to theadjacent plates engaging them. After the brazing operation has beencompleted and the unit has cooled to room temperature the projectingends 6| of the rods and the nuts on them will be removed so that theends of the unit will have smooth fiat sLu'faces, thus permittingseveral nose board units to be arranged side by side in close order onthe loom.

When the nose board is made as set forth herein the hooks 3| and noses33 will project rearwardly beyond the rear ends 55 of the spacer platesto define slots 16 for the reception of the reed dents l3 and guideplates l5. If there is any distortion of the unit due to the heatingoperation this can be corrected in a straightening press to align all ofthe noses 33 before the unit is put in the loom. Also, if it is desiredthat the plate have a perfectly smooth top surface to engage the underpart of the fabric F the upper edges 36 and 45 and any brazing metalpresent may be removed in a grinding or similar operation. When theproper amount of brazing metal is used there will be no excess of itpresent on the surface of the unit, or in the slots 56, but if suchexcess should exist it can be readily removed.

Either before or after removal of the nuts 62 and 63, but after thebrazing or bonding operation the nose plate will have drilled verticallytherethrough holes 1| counterbored at 12 to receive holding screws orbolts 13 which are tapped into the breast beam H, see Fig. l. The holes1| will ordinarily be of a diameter greater than the width of either anose or spacer plate and will out certain of the plates into front andrear parts which will. however, be held in fixed position by the bondingmetal. As shown in Fig. 9 the holes 1| are located between the metalrods 66 and 62 and do not sever the latter. The holes are preferablylocated between the front and rear widened parts of the nose and spacerplates, and will ordinarily extend through that part of the nose plateintermediate the shoulders 35 and 31 of the nose plates. The nose boardis also provided with a perforation to receive a placing pin (not shown)on the breast beam. Perforation is about the diameter of holes orperforations H and will be drilled after the bonding operation.

It has been found that a nose board made as set forth hereinbefore willhave its noses 33 and the spaces 10 between them accurately spacedwithout requiring any substantial straightening operation subsequent tothe brazing. If the plate is to be used in an Axminster loom weavingseven tufts to the inch measured across the loom, the spaces or slots 10will need to be separated from each other by and this spacing isattained by selecting the correct thicknesses for the nose and spacerplates.

From the foregoing it will be seen that the invention sets forth a noseboard comprising two types of plates which are strung in alternation onrods or the like 60 and 62. The nose board has its component partsbonded together by a brazing metal which not only unites adjacent facesof the nose and spacer plates, but also unites the latter to the rods.It will further be seen that the lower edges 48 of the spacer plates areat a higher level than are the edges 34 of the nose plates, the purposeof this relation being to define guide slots 56 for the tops of theguide plates IS. The invention also sets forth a method for making thenose board wherein the nose and spacer plates are assembled on the rodsand forced together by clamp means, such as nuts 63, and then submittedto a brazing operation,-after which the nuts on the rods and those partsof the latter which project beyond the ends of the nose board unit areremoved. During the heating operation the plates and 26 are heldtogether by the rods as a self supporting unit not reouiring holdingfixtures or the like. The perforations H and. 15 are dr lled after thebrazing operation, and even thou h certain of the nose and spacer platesare cut in two arts the latter will be held by the bonding. TheAxminster nose plate as set forth herein is very much cheaper than noseplates heretofore produced, and when the brazing and sub eouent coolingo erations are properly carried out there is little or no distortion ofthe noses 33, and with but few inexpensive finishing operations the noseboard can be placed in a loom as it is taken from the furnace.

Having thus described the invention it will be seen that changes andmodifications of the foregoing specific disclosure may be made withoutdeparting from the spirit and scope of the invention.

What is claimed as new is:

1. In a nose board for an Axminster loom, a plurality of fiat parallelnose plates each having a tuft yarn guiding nose at the rear endthereof, a plurality of fiat parallel spacer plates, said platesarranged side by side and the nose plates alternating with the spacerplates, the rear ends of the spacer plates terminating forward of thenoses of the nose plates, and means holding said plates in fixedposition relatively to each other.

2. In a nose board for an Axminster loom, a plurality of fiat parallelnose plates each having a tuft yarn guiding nose at the rear endthereof, a plurality of fiat parallel spacer plates, said platesarranged side by side and the nose plates alternating with the spacerplates, the rear ends of the spacer plates terminating forward of nosesof the nose plates, and means including an elongated member transverseof said plates holding the latter in fixed position relatively to eachother.

3. In a nose board for an Axminster loom provided with reeddents, aplurality of metallic parallel flat nose plates alternating withmetallic parallel flat spacer plates, the nose plates projecting beyondthe spacer plates and the latter spacing the nose plates to define slotsto receive the reed dents, and elongated metallic means extendingtransversely of said nose and spacer plates, the nose and spacer platesbeing secured to each other and to the elongated means by a bondingmetal.

4. In a nose board unit for an Axminster loom, a plurality of fiatparallel nose plates each provided at the rear end thereof with a hookand a tuft yarn engaging nose, a plurality of parallel spacer platesalternating with the nose plates and the rear ends of which terminateforward of the hooks and noses of said nose plates, elongated meansextending transversely through said nose and spacer plates aligning saidplates to form the nose board unit, and means holding said nose andspacer plates and elongated means in fixed position with respect to eachother.

5. In a nose board for an Axminster loom, a plurality of fiat steelplates each formed with a tuft yarn engaging nose at the rear endthereof, a plurality of fiat steel spacer plates alternating with thenose plates, elongated steel means extending transversely through saidnose and spacer plates and holding the spacer plates in such positionthat the rear ends thereof are forward of the noses of the nose plates,and a bonding metal securing said nose and spacer plates to each otherand to said elongated steel means to hold all parts of the nose board inrigid position with respect to each other.

6. In a nose board for an Axminster loom provided with reed dents and aset of spaced tuft yarn guide plates, a plurality of fiat nose plateseach having at the rear end thereof a tuft yarn engaging nose, aplurality of flat spacer plates alternating with the nose plates, therear ends of the spacer plates terminating forward of the.

noses of the nose plates, both the nose and spacer plates having bottomedges which are inclined downwardly and forwardly from the rear endsthereof, the inclined bottom edges of the nose plates projecting belowthe bottom inclined edges of the spacer plates to define guide slots forsaid tuft yarn guiding plates, elongated means extending transversely ofsaid nose and spacer plates, and means holding said nose and spacerplates and elongated means in fixed relation with respect to each otherwith the rear ends of the nose plates spaced from each other rearwardlyof the spacer plates to form slots for said reed dents.

7. In a nose board for an Axminster loom provided with reed dents andyarn guiding plates, a plurality of fiat nose plates each provided atthe rear end thereof with a hook and a tuft yarn engaging nose, eachnose plate having a bottom edge inclined downwardly and forwardly fromthe nose thereof, a plurality of fiat spacer plates alternating with thenose plates, each spacer plate having the rear end thereof terminatingforward of the hooks and noses of adjacent nose plates, and each spacerplate having a lower edge inclined downwardly and forwardly from therear end thereof above said inclined bottom edges of the nose plates todefine guide slots for said yarn guiding plates, and means holding saidplates in fixed relation with respect to each 7 other with the rear endsof the nose plates projecting rearwardly of the spacer plates andseparated by slots to receive said reed dents.

8. In a nose board for an Axrninster loom provided with a set of tuftyarn guiding plates and a reed having dents, a plurality of flatmetallic nose plates each provided at the rear end thereof with a hookand a yarn engaging nose, a plurality of flat metallic spacer platesalternating with said nose plates and having their rear ends terminatingforward of the hooks and noses of the nose plates, the lower edges ofthe nose plates projecting below the lower edges of the spacer plates todefine guide slots for said tuft yarn guiding plates, elongated metallicmeans extending transversely of said nose and spacer plates to align thelatter, and a bonding metal securing the nose and spacer plates to eachother and to said elongated metallic means with the rear ends of thenose plates projecting rearwardly beyond the rear ends of the spacerplates to define slots for said reed dents.

9. In a nose board for an Axniinster loom having a breast beam and reeddents, a plurality of flat metallic nose plates the rear end of each ofwhich is formed with a tuft yarn engaging nose, a plurality of flatmetallic spacer plates alternating with the nose plates and having therear ends thereof terminating forward of said noses, elongated metallicmembers extending transversely of said nose and spacer plates, and abonding metal securing said nose and spacer plates to each other and tosaid elongated metallic members, said nose board having perforationstherethrough parallel to said plates to receive means for attachmentthereof to said breast beam, said perforations measured laterally of theplates being wider than the width of either a spacer or a nose plate,said bonding metal holding those parts of the nose and spacer plateswhich are in front of and behind said perforations in fixed positionrelativel; to the nose board.

10. In a nose board for an Axminster loom hav ing a breast beam and reeddents, a plurality of fiat metallic nose plates the rear end of each ofwhich is formed with a tuft yarn engaging nose, a plurality of flatmetallic spacer plates alternating with the nose plates and having theirrear ends terminating forward of said noses, elongated metallic membersspaced from each other in the direction of the length of said plates andextending transversely of said nose and spacer plates, and a bondingmetal securing said nose and spacer plates to each other and to saidelongated metallic means, said nose board having perforationstherethrough parallel to said plates to receive means for attachmentthereof to said breast beam, said perforations measured lateral- 1y ofthe plates being wider than the width of either a spacer or a nose plateand said perforations extending through the nose board at some part ofthe latter other than the parts thereof through which the elongatedmetallic members extend, said bonding metal holding those parts of thenose and spacer plates which are in front of and behind saidperforations in fixed position relativel to the nose board.

11. In a nose board for an Axminster loom having a breast beam and reeddents, a plurality of flat metallic nose plates the rear end of each ofwhich is formed with a tuft yarn engaging nose, a plurality of fiatmetallic spacer plates alternating with and in side by side engagementwith the nose plates and having their rear ends terminating forward ofsaid noses, elongated metallic members spaced from each other in thedirection of the length of said plates and extending transversely ofsaid nose and spacer plates, and a bonding metal securing said nose andspacer plates to each other and to said elongated metallic members, saidnose board having perforations therethrough spaced from said elongatedmembers to receive means for attachment of the nose board to said breastbeam.

WILLIAM A. BLANCHARD.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,224,592 Brown Dec. 10, 19 .02,280,931 Schuh Apr. 28, 1912 2,293,561 Robb Aug. 18, 1242 2,458,427Russell et .al. Jan. 4, 1949

